Operational Check of Antiskid Inhibition

TASK 32-42-00-710-003-A
Operational Check of Antiskid Inhibition

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

ZONE: 210

1. Reason for the Job
Refer to the MPD TASK: 324300-02
OPERATIONAL CHECK OF ANTISKID INHIBITION
To make sure that the anti-skid system is inhibited when the A/SKID & N/W STRG switch is set to OFF.
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 32-46-00-740-002-A	BITE Test of the BSCU - Ground Scanning

3. Job Set-up
Subtask 32-42-00-865-077-A

A. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	SDAC/1/SPLY	3WV	F04
49VU	FWS/FWC1/SPLY	3WW	F01
121VU	EIS/FWC2/SPLY	2WW	Q07
121VU	EIS/SDAC/2/SPLY	2WV	Q06

Subtask 32-42-00-860-057-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the Green and Yellow hydraulic systems and the Yellow brake accumulator are depressurized (Ref. AMM TASK 29-10-00-864-001) and (Ref. AMM TASK 29-10-00-864-002).
(3) On the panel 400VU:

Make sure that the landing-gear normal control-lever is set to DOWN.

(4) Make sure that the free-fall control-handle is in the normal position.
(5) Make sure that the wheel chocks are in position.
(6) On the panel 110VU:

Make sure that the parking-brake control-switch is set to OFF.

(7) On the panel 402VU:

Make sure that the A/SKID & N/W STRG switch is set to ON.

(8) Do a reset (more than 1s) of each SDAC and FWC:

on the panel 49VU, open then close the SDAC 1 circuit breaker 3WV
on the panel 49VU, open then close the FWC 1 circuit breaker 3WW
on the panel 121VU, open then close the SDAC 2 circuit breaker 2WV
on the panel 121VU, open then close the FWC 2 circuit breaker 2WW

(9) On the ECAM control panel:

Push the WHEEL pushbutton switch to get the WHEEL page on the lower ECAM display unit.

Subtask 32-42-00-860-057-B ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the Green and Yellow hydraulic systems are depressurized (Ref. AMM TASK 29-10-00-864-001) and (Ref. AMM TASK 29-10-00-864-002).
(3) Make sure that the brake Yellow accumulator is hydraulically pressurized.
(4) On the panel 400VU:

Make sure that the landing-gear normal control-lever is set to DOWN.

(5) Make sure that the free-fall control-handle is in the normal position.
(6) On the panel 110VU:

Make sure that the parking-brake control-switch is set to OFF.

(7) On the panel 402VU:

Make sure that the A/SKID & N/W STRG switch is set to ON.

(8) Do a reset (more than 1s) of each SDAC and FWC:

on the panel 49VU, open then close the SDAC 1 circuit breaker 3WV
on the panel 49VU, open then close the FWC 1 circuit breaker 3WW
on the panel 121VU, open then close the SDAC 2 circuit breaker 2WV
on the panel 121VU, open then close the FWC 2 circuit breaker 2WW

(9) On the ECAM control panel:

Push the WHEEL pushbutton switch to get the WHEEL page on the lower ECAM display unit.

(10) Do the BITE test of the BSCU (GROUND SCANNING) (Ref. AMM TASK 32-46-00-740-002)

If the test gives a maintenance message, do the related trouble shooting procedure. Use the Fault Symptom(s) as entry into the TSM.

Subtask 32-42-00-865-055-A

C. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/Y BRK/PRESS/IND	61GG	C10
** ON A/C NOT FOR ALL
49VU	ABCU &/Y BRK/PRESS IND	61GG	C10
** ON A/C ALL
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY	4GG	M36
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/CTL	3GG	M35
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/CTL	1GG	M34
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY	2GG	M33

Subtask 32-42-00-941-055-A

D. Safety Precautions
(1) Put warning notices to tell persons not to operate the landing gear control lever.
(2) Put warning notices to tell persons not to pressurize the Green and Yellow hydraulic systems.

4. Procedure
Subtask 32-42-00-710-057-A ** ON A/C NOT FOR ALL

A. Test

ACTION	RESULT
1.On panel 402VU: Set the A/SKID & NOSE WHEEL switch to OFF.	The single chime operates. On the lower ECAM DU, on the WHEEL page: The amber STEERING or N/W STEERING indication comes into view. The amber ANTI SKID indication comes into view. The amber AUTO BRK indication comes into view for one second, then goes out of view. On the upper ECAM DU: The amber BRAKES A/SKID N/WS OFF indication comes into view.
2.On panel 402VU: Set the A/SKID & NOSE WHEEL switch to ON.	On the lower ECAM DU: The amber STEERING or N/W STEERING indication goes out of view. The amber ANTI SKID indication goes out of view. The amber AUTO BRK indication is not shown. On the upper ECAM DU: The amber BRAKES A/SKID N/WS OFF indication goes out of view.

Subtask 32-42-00-710-057-B ** ON A/C NOT FOR ALL

A. Test

ACTION	RESULT
1.On panel 402VU: Set the A/SKID & N/W STRG switch to OFF.	The single chime operates. On the lower ECAM DU, on the WHEEL page: The amber N/W STEERING indication comes into view. The amber ANTI SKID indication comes into view. The amber AUTO BRK indication comes into view or stays in view, if already shown. On the upper ECAM DU: The amber BRAKES A/SKID N/WS OFF indication comes into view.
2.On panel 402VU: Set the A/SKID & N/W STRG switch to ON.	On the lower ECAM DU: The amber N/W STEERING indication goes out of view. The amber ANTI SKID indication goes out of view. The amber AUTO BRK indication goes out of view. On the upper ECAM DU: The BRAKES A/SKID N/WS OFF indication goes out of view.

Subtask 32-42-00-710-057-D ** ON A/C NOT FOR ALL

A. Test

ACTION	RESULT
1.On panel 402VU: Set the A/SKID & N/W STRG switch to OFF.	The single chime operates. On the lower ECAM DU, on the WHEEL page: The amber N/W STEERING indication comes into view. The amber ANTI SKID indication comes into view. The amber NORM BRK indication comes into view. The green ALTN BRK indication comes into view. The green ACCU ONLY indication comes into view. The amber AUTO BRK indication comes into view. On the upper ECAM DU: The amber BRAKES A/SKID N/WS OFF indication comes into view.
2.On panel 402VU: Set the A/SKID & N/W STRG switch to ON.	On the lower ECAM DU: The amber N/W STEERING indication stays in view. The amber ANTI SKID indication stays in view. The amber NORM BRK indication stays in view. The green ALTN BRK indication stays in view. The green ACCU ONLY indication stays in view. The amber AUTO BRK indication goes out of view. On the upper ECAM DU: The amber BRAKES A/SKID N/WS OFF indication goes out of view.

ACTION

RESULT

1.On panel 402VU:

Set the A/SKID & N/W STRG switch to OFF.

The single chime operates.

On the lower ECAM DU, on the WHEEL page:

The amber N/W STEERING indication comes into view.
The amber ANTI SKID indication comes into view.
The amber NORM BRK indication comes into view.
The green ALTN BRK indication comes into view.
The green ACCU ONLY indication comes into view.
The amber AUTO BRK indication comes into view.

On the upper ECAM DU:

The amber BRAKES A/SKID N/WS OFF indication comes into view.

2.On panel 402VU:

Set the A/SKID & N/W STRG switch to ON.

On the lower ECAM DU:

The amber N/W STEERING indication stays in view.
The amber ANTI SKID indication stays in view.
The amber NORM BRK indication stays in view.
The green ALTN BRK indication stays in view.
The green ACCU ONLY indication stays in view.
The amber AUTO BRK indication goes out of view.

On the upper ECAM DU:

The amber BRAKES A/SKID N/WS OFF indication goes out of view.

Subtask 32-42-00-860-058-A

B. Aircraft Maintenance Configuration
(1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

5. Close-up
Subtask 32-42-00-942-054-A

A. Removal of Equipment
(1) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 08:26:45 UTC